BR112012017958B1 - borehole tool adapted to be lowered into a borehole in a pipe column and method for utilizing a flow tool - Google Patents

Abstract

borehole tool adapted to be lowered into a borehole in a pipe stand and method for using a flow tool is disclosed a power head for connection to a pipe stand suspended in an underground location in a borehole for use in pit bore debris removal methods. When the power head is in the closed position, well fluids pumped down the pipe column will flow through the power head. When the power head is moved to the open position by dropping an actuating ball into a power head seat, the power head creates downward flow along the annular to circulate debris-laden well fluids to a capture apparatus. , such as a capture basket or screen. In the open position, the nozzles and eductor create the reverse flow.

Description

“WELL HOLE TOOL ADAPTED TO BE LOWERED INSIDE A WELL HOLE IN A PIPE COLUMN AND METHOD FOR USING A FLOW TOOL” Background Technical Field [0001] The present inventions, in general, refer to tools enhanced and improved well hole debris cleaning and related methods of use. In general, the tools of the present inventions are connected to a pipe column, such as a drill column, for use in an environment within the well to remove debris from the well.

[0002] Well operations, such as milling a tool or pipe in a well bore or billing operation, create debris that needs to be collected and removed from the well. For example, a rock bottom composition with a cutter is made with a debris collection tool. Debris collection tools are often referred to as scrap baskets, collecting baskets or sand screens. There are a variety of different collection tools that operate on different principles. However, in general, these various tools have a common goal of separating circulating fluid from fragments and cuttings and / or other debris that are present in the well bore. In some tools, reverse circulation is created at the bottom end of the pipe column and is used to circulate debris to the collection tool. Reverse circulation is usually created using a tool, sometimes called a power head, to direct the flow loaded with fragments and cuttings and / or particulate material to a debris removal set.

[0003] Exemplary, non-limiting modalities and / or disclosures of scrap collection devices and vacuum devices are disclosed at: US 2,915,127; US 2,771,141; US

2,915,127; US 3,023,810; US 3,382,925; US 4,059,155; US

5,176,208; US 5,402,850; US 5,944,100; US 6,176,311; US

6,276,452; US 6,341. 653; US 6,962,197; US 7,472,745; US 2007 / 0272404A1; and US 2009 / 0126933A1, the contents of which are hereby incorporated by reference for all purposes, as if they were presented here in their entirety. However, the technical field is still looking for satisfactory tools to clean up debris from a well.

Summary of the inventions [0004] In general, several embodiments of the present inventions comprise: a power head comprising a central flow passage, at least one eductor with a flow path parallel to the central flow passage, and at least one opening ventilation. The valve is able to direct the flow through the eductor and open the ventilation opening, allowing flow through the eductor and to annul it. The eductor is positioned to create a low pressure area to generate reverse circulation in a debris collection set. The debris collection tool includes improved extraction and filter sets.

[0005] These and other characteristics and advantages of the inventions will be evident to those skilled in the art from the following detailed description of a preferred modality, taken in conjunction with the accompanying figures and the claims.

Brief description of the figures [0006] All figures of the present inventions are not to scale, unless otherwise indicated. It should be understood that these drawings represent only typical modalities of the inventions and, therefore, should not be considered as limiting their scope, the inventions will be described with additional specificity and details through the use of the attached drawings, in which: [0007] The figure 1 is a sectional view of a powerhead embodiment of the present invention in a closed position;

[0008] Figure 2 is a sectional view of the embodiment of figure 1 in an open position;

[0009] Figure 3 is a sectional view taken on line AA of figure 3;

[0010] Figure 4 is a sectional view of a debris collection portion of the present inventions capable of being used with powerhead modalities of the present inventions;

[0011] Figure 5 is a sectional view of an alternative embodiment of a powerhead of the present inventions in a closed position;

[0012] Figure 6A is a sectional view of the power head of Figure 5 in an open position;

[0013] Figure 6B is a similar sectional view of an alternative embodiment of the power head of figure 6A, shown in the closed position;

[0014] Figure 7 is a sectional view of an alternative embodiment of a debris collection portion of the present invention;

[0015] Figure 8 is an illustration in cross-section of an alternative embodiment of the screen portion of the debris collection portion of figure 8;

[0016] Figure 9 is a perspective view of the powerhead of the present inventions assembled with a third alternative embodiment of the debris collection portion of the present inventions;

[0017] Figure 10 is a sectional view of the whole of Figure 9;

[0018] Figure 11 is a sectional view of the filter portion of the assembly of Figure 9;

[0019] Figures 12 a and b are seen in section of modalities of the extraction portion of the set of figure 9; and [0020] Figure 13 is a sectional view of the valve in the filter portion of the present inventions.

Detailed description of the inventions [0021] The particularities presented here are by way of example and for the purpose of illustrative discussion of the preferred modalities of the present inventions only and are presented in order to provide what is believed to be the most useful and readily understood description of the principles and the conceptual aspects of various modalities of inventions. In this regard, no attempt is made to show structural details of the inventions in more detail than is necessary for a fundamental understanding of the inventions, the description taken with the drawings making it evident to those skilled in the art how the various forms of the inventions can be incorporated. in practice.

[0022] The following definitions and explanations are not intended and are not intended to control any future construction, unless clearly and unambiguously modified in the description that follows. In cases where the construction of the term would be rendered meaningless or essentially meaningless, the definition should be taken from Webster's Dictionary, 3rd Edition. Definitions and / or interpretations should not be incorporated into other patent applications, patents or publications, related or not, unless specifically indicated in this specification, or if the incorporation is necessary to maintain validity. [0023] As used herein, the term "fixed", or any combination thereof, describes and refers to the at least partial connection of two items.

[0024] As used here, the term "integral" means and refers to the lack of anything essential after assembly.

[0025] As used herein, the term "fluid" is a continuous amorphous substance whose molecules move freely passing one another and which have the tendency to assume the shape of their container, for example, a liquid or a gas.

[0026] Except in the examples of operation, or when otherwise indicated, all numbers expressing quantities of components used here must be understood as modified in all cases by the term "about".

[0027] As used herein, an "eductor" is a device typically having a nozzle with an inlet opening to flow fluid through the device to an outlet opening and to create a suction to suck fluid into a suction opening to mix with the fluid flowing between the inlet and the outlet. Eductors include, for example, jet pumps and Venturi pumps. “Eductor shaft” means the center line of the nozzle.

[0028] As used herein, "debris catcher" is a device for the separation of solids from well-hole fluids and includes screens and baskets.

[0029] Various embodiments of the present invention, in general, provide an intensified differential pressure force head. In various additional embodiments, a differential power head of the present inventions can be used with a variety of drilling accessories and / or modular drilling accessories. In one embodiment, a differential pressure force head of the present inventions is associated with a well bore cleaning tool, such as, not by way of limitation, a scrap basket, filter screen and / or the like. Differential pressure is created by circulating the inverse flow of the tool bore and / or the production pipe, rather than by operating the flow of the outside diameter of the production pipe and / or the borehole or casing. The flow is created, at least in part, from the pressure differential and the Venturi effect. Several modalities of the present inventions maximize the pressure of an eductor through an internal tube.

[0030] Referring now to the drawings, in which similar reference characters are used in all the various figures, Figures 1 to 3 illustrate a modality of a power head 110 of the present inventions arranged in an underground well bore 105. In Figure 1, the power head 110 is shown in the closed position, and in Figure 2, it is shown in the open position. Alternative modalities of a powerhead 110 are capable of comprising several other portions or segments that may be required for a particular drilling scheme or drilling procedure. In various embodiments, additional sub or piercing column parts are connected as well, such as an upper sub (an example of which is shown in Figure 4).

[0031] In various embodiments, the power head 110 comprises a tubular element 25 that defines an axially extending flow path 102 and ventilation openings 150 in the wall of the tubular element 25. The tubular element 25 has means, such as threads , at its ends for the connection of the power head in fluid communication in a pipe column. The powerhead 110 further comprises a valve assembly 30 located on the tubular member 25 for sliding axially there between an open position and a closed position. In general, when the ventilation openings in the closed position 150 are blocked, there is no communication between the inside of the power head and the annular of the well hole tubing 105. In the open position, the ventilation openings 150 are open.

[0032] The body of the valve assembly 30 comprises an upper member 142, at least one eductor 155 and a deflector base 175. The valve assembly 30 has a spherical actuating valve seat 132 that surrounds the axially extending passage 156. It should be noted that the valve seat 132 is downstream of the bypass opening line 115 and upstream of the suction chamber 124. Eductor jet nozzles 122 are removably mounted (with thread) on the upper element 142 with eductor tubes 155 aligned with the eductor jet nozzle 122. The open space below the nozzles forms a suction chamber 124. In the preferred embodiment, six eductors are present, but it is only necessary to have at least one eductor for the powerhead to function. As illustrated, the eductors use not only a smooth converging profile, but also in the preferred mode, the converging profile is combined with a smooth diverging profile. These profiles are advantageous with well fluids containing solids. The baffle base 175 has an axially extending fluid flow passage 162 and a conical top surface 164. The baffle base is mounted to slide axially or travel on the tubular element 25 with the upper element 142. In Figure 1, the base baffle 175 is shown in the closed position, with flow through openings 150 blocked and flow through eductor tubes 155 blocked. A pair of axially spaced seals 158 is mounted on the baffle 175 to seal with the inner wall of the tubular member 25 to isolate the holes 150 from the fluid flow path 102. In various embodiments, at least a portion of the eductor jet nozzles 122 is coated.

[0033] Eductor tubes 155 are fixed between the upper element 142 and the baffle base 175 by means of screws 211 (illustrated in Figure 3) that extend between the base and the upper element. In this mode, the eductors can be easily removed for service. In addition, the power head can be customized for the particular application by changing the length and shape of the eductors and nozzles. The upper element assembly 142, eductor tubes 155 and deflector base 175 can be held in place, releasably, in the tubular element 25, in closed or open positions by shear pins 176 or retainers (not shown) or the like. In various embodiments, the valve assembly 30 forms an interference fit in the tubular element 25.

[0034] The bypass opening lines 115 can generally be in an orientation that extends from the internal flow path 102 to the eductor jet nozzles 122. In one embodiment, the bypass opening 115 opens at an angle of about ninety (90) degrees of the fluid path. In an alternative embodiment, the bypass openings open at an angle of about 120 degrees from the fluid path. In an alternative embodiment, the bypass openings open at an angle of about 135 degrees from the fluid path. In an alternative embodiment, the bypass openings open at an angle of about 150 degrees from the fluid path. In an alternative embodiment, the bypass openings open at a smaller angle than an angle of about 150 degrees of the fluid path. Generally, any angle not excessively impeding the passage of the fluid is acceptable.

[0035] Valve seat 132 is adapted to receive a drive ball or ball-shaped valve element 120 (shown in Figure 2). In various embodiments, the ball-shaped valve element 120 is released from the wellhead above the powerhead 110 into the fluid path and the internal axial passage 156. It is understood that the valve element could otherwise be used, it is only important that the valve element corresponds to the seat to block the flow through the seat. Commonly, sphere 120 is released from or around the surface. However, other mechanisms for storing and / or releasing ball 120 are capable of use with modalities other than the present inventions, such as a shelf or support above valve seat 132. When ball 120 is supported on valve seat 132, the fluid path 147 through the axial passage 156 is blocked and fluid is pumped through the pipe column to the head 110 which is diverted to bypass opening lines 115 and through the eductor jet nozzles 122. In various embodiments, a shear pin 176 holds the power head in either a closed or an open position. In general, in the closed position, there is no communication between the inside of the power head and the annular pipe of the borehole 105.

[0036] As explained, when the ball 120 is supported on the valve seat 132, the well fluid flowing in the pipe column is prevented from flowing through the axial passage 156. As the fluid pressure increases, the set of fluid valve 30 shears pins 176 and moves or is forced down to the open position shown in Figure 2. This moves the deflector base 175 below the ventilation openings 150, opening the eductor discharge to the annular of the tubular element 25.

[0037] In the open position, fluid from the well is diverted to and through the eductor jet nozzles 122. In various modalities, the eductor tubes 155 and the eductor jet nozzles 122 can assume different shapes, volumes and / or lengths. Well fluids flowing through the eductor jet nozzles 122 provide energy to the eductors by increasing the speed and lowering the pressure of the flowing well fluid. As a result, a partial vacuum is created in the suction chamber 124. The well fluid passes through the suction chamber, dragging fluids into the suction chamber. The friction between the well fluids causes the suction chamber to be evacuated. This allows the lower pressure in the suction chamber to “pull” or pump additional fluid upward into the suction chamber from the fluid passage portion 162 below ball valve 120. The pressurized fluid passage through the eductor jet 122, to the suction chamber 124 and through the eductor tubes 155 creates suction in the suction chamber (Venturi effect), such that any well fluid in the pipe column below the power head will be drawn into the chamber along the fluid passage 162 and thence to the eductor tubes 155, together with the fluid from the eductor jet nozzles 122. The mixture then passes along the fluid flow path or fluid path 109 through the diverging cone of smooth eductor walls where the kinetic energy of the fluid is converted back to pressure. The combined fluid then leaves the eductor and is directed to the well bore along flow path 112.

[0038] In several modalities, there are one or more eductors arranged circumferentially surrounding the fluid passage 162. In alternative modalities, there are multiple eductors arranged radially symmetrically around the fluid passage 162. In one embodiment, there are at least two (2) eductors encircling fluid passage 162. In an alternative embodiment, there are at least three (3) eductors circumferentially encircling fluid passage 162. In an alternative embodiment, there are at least four (4) eductors encircling fluid passage 162. In an alternative embodiment, there are at least five (5) eductors surrounding the fluid passage 162. In an alternative embodiment, there are at least six (6) jets surrounding the fluid passage 162. In an alternative embodiment, there are at least seven (7) eductors surrounding the fluid passage 162. In an alternative embodiment, there are at least eight (8) eductors surrounding the fluid passage 162. In In general, any number of eductors can be used to optimize the vacuum effect and / or the eductor effect and / or the pressure differential effect.

[0039] In general, in an operating method, and referring to Figure 1, the drilling fluid is circulated through the power head 110 along the fluid flow path 102. When the power head 110 is in in a closed position, drilling fluid flows from flow path 102 through flow passage 162 to the drill or cutter at the bottom of the column. During milling operations or when the removal of debris and cuttings and / or debris is desired, ball 120 is dropped to rest against valve seat 132 (as shown in Figure 2). Continuous pumping of the drilling fluid increases the pressure in the tubular element 25, where the valve assembly 30 is propelled to slide into the well until the discharge from the eductor is aligned with the vent opening 150 whereby the drilling fluid is allowed to flow for the annulus of the borehole by redirecting the fluid flow path from flow path 102 to flow path 112. As described, flow through the eductor jet nozzles 122 and eductor tubes 155 causes fluids to flow above the tubing column under the power head 110 along the fluid flow path 102 and to the suction chamber 124. [0040] In various embodiments, the eductor tubes 155 are tapered. In several embodiments, an induced flow is possible through circulation and / or recirculation. In one embodiment, eductor tubes 155 are divergent to induce drilling fluid flow. In an alternative embodiment, eductor tubes 155 are convergent to induce drilling fluid flow. In an alternative embodiment, eductor tubes provide converging and diverging surfaces to induce drilling fluid flow. In an alternative embodiment, eductor tubes 155 have multiple converging and diverging flow regions to induce drilling fluid flow. In general, regions of variable convergence and divergence can be used in one embodiment of the present inventions.

[0041] In various embodiments, the drilling fluid flow path 109 along the eductor axis through the eductor tubes 155 is substantially parallel to the fluid flow path 102. In several alternative embodiments, the drilling fluid flow through of the eductor tubes is approximately parallel to the fluid flow path 102. In general, the flow of drilling fluid 109 through the eductor tubes 155 is directionally related to the fluid flow path 102.

[0042] At least a portion of the redirected drilling fluid flows at high pressure along the fluid flow path 109 and generally decreases in pressure through the suction chamber 124 in flow path 109. In general, the pressure in one path The fluid flow rate of the present inventions is dependent on the volume and / or the surface area of the flow path. In general, the pressure differential capable with various modalities of the present inventions can be used to lift debris and / or fragments and gravel and / or other items.

[0043] Figure 3 is an illustration of a section of Figure 2 along line 3-3. As can be seen, a plurality of screws 211, jets 122 and eductor tubes 155 surround the path 102.

[0044] Figure 4 illustrates a modality of a waste collection set 330 for use with a power head of the present inventions and comprises an extraction 340, a tubular collection chamber or basket 360 and a lower sub (or nozzle) 335 screwed to the bottom of the basket 360. A removable assembly 362, comprising front plate or base 336, second tube or inner 372, and stabilizers 341, is located in the collection chamber or basket 360. The removable inner tube assembly 362 is maintained in place between the lower sub 335 and the basket 360. The inner tube 372 has an opening 345 at its upper end through which fluid flows into the chamber 360. The inner tube 372 preferably has an open end, but can take other configurations, such as a plurality of openings around the upper end of the inner tube. According to a feature of the present inventions, the smaller sub can be detached and the tube assembly 362 removed to wash the debris collected in the basket 360.

[0045] The first chamber 338 and a screen cage 339 comprise an upper set 310 and are located above the second set of tube or inner 362. The embodiments further comprise a tubular passage 368 and / or extension portion 371. When the head force is in the open position (recirculation mode), the fluid flows to the debris collection set 330 along the fluid path 301 and to the inner tube 372. Generally, the drilling fluid that flows into the inner tube 372 it is loaded with debris and / or fragments and cuttings that need to be separated from the drilling fluid. The drilling fluid passes through the second inner tube 372 and through extraction 340. Extraction 340 causes larger debris and / or fragments and cuttings to fall into the collection chamber or basket 360. The fluid and smaller debris pass through the openings or passages 364 in extraction 340. In the form of a waste collection set 330, for use in conjunction with a milling operation, the waste collection set 330 can be stretched or repeated, depending on the length of the liner on which the waste operation is carried out. well hole will be carried out.

[0046] The drilling fluid will continue to flow through the debris collection assembly 330 along the fluid path 306 to a power head of the present inventions. In various embodiments, the drilling fluid passes through a 339 mesh cage to remove additional debris and / or fragments and cuttings. In various embodiments, at least a portion of the clean drilling fluid will be circulated back to the well hole for drilling operations.

[0047] Figures 5 and 6A illustrate an alternative embodiment of a power head 225, comprising housing 226 with a valve assembly 228 mounted thereon. The housing 226 comprises an annular shoulder at 226b, a portion of reduced internal diameter 226a with ventilation openings 250 therein. Valve assembly 228 comprises a three-piece upper element 234, eductors 255 and baffle base 230 held together by screws 211. The upper element 234 comprises a ball guide 234a, valve section 234b and eductor stabilizer 234c. The ball guide 234a comprises valve seat 232 and assembles eductor jets 222. When the power head is moved to the open position, shown in Figure 6A, the shoulder 236 on the baffle 230 engages the reduced internal diameter portion 226a for properly align valve assembly 228 with ventilation openings 250.

[0048] In Figure 6B, an alternative modality of the power head 225 is illustrated in the actuated position. In this embodiment, a second valve assembly 250 is mounted in housing 226 above valve assembly 338 and bypass openings 252 are formed in the housing wall 226. Valve assembly 250 comprises valve body 254 and annular seals 256, sealing against the inner wall of the housing 226. A valve seat 258 is formed in the body 224 around the axial passage 260. The seat is of a size and shape to receive a valve element, in the illustrated embodiment, a ball 262 A passage 260 is of a size and shape to allow ball 220 to pass through it. Body 254 is mounted in housing 226 to axially slide in the forward and backward direction of arrow D. In use, the second valve assembly can be placed in the well in the passage position (not shown), that is, with the body valve position 254 raised to a flow blocking position through openings 252. A shear pin or the like can be used to hold valve body 254 in the raised position. When it is necessary to block the flow through the power head 225 and open openings 252, a large valve element (ball actuator 264) is pumped into seat 258 and valve body 254 is forced to slide down to the actuated position illustrated in Figure 6B. Valve assembly 250 can be used to circulate well fluids, either into or out of the pipe column through openings 252. Valve assembly 250 allows the power head 225 to be lowered into the well in the open condition and then deactivated by actuating valve assembly 250.

[0049] Figure 7 is an enlarged sectional view of an alternative modality of a modular debris collection device 500 with a check valve 532 capable of being used with various modalities of the present invention. In general, a first debris collection portion 510, comprising an inner tube 512 and an expanded region 515, is used to remove larger debris from the drilling fluid. As the drilling fluid flows, the inner tube 512 expands to region 515 and releases a portion of its debris accumulated in the collection chamber 517.

[0050] Eventually, the collection chamber 517 fills up and needs cleaning. Various embodiments of the present invention use a handling sub 520 with a cut-out portion 522 to be gripped by existing clamps and / or tools at the drilling site. As such, the sub 520 can be disconnected from a separate drilling column and collection chamber 517 and emptied, thus saving valuable drilling time.

[0051] A single sand sub 530 for the removal of particles, such as, but not limited to, sand and propant, can be attached to various modalities of the present invention to intensify well cleaning procedures. The sand sub 530 generally comprises a mesh 539, an inner tube 572, a debris collection chamber 537, a base plate 534, and a check valve 532. The check valve 532 can be constructed to be opened during flow reverse and closed during normal circulation. Several modalities still include openings (not shown) to allow operation during normal circulation.

[0052] Figure 8 is an illustration of an alternative check valve capable of being used with various modalities of a sand sub 630 of the present inventions, comprising an elongated debris collection chamber 637, a check valve 632, a mesh 639 , an inner tube 672 and a base plate 634. In general, fluid is selected to flow during circulation and / or reverse circulation around check valve 632.

[0053] An alternative embodiment of the debris collection set 700 of the present inventions is illustrated, made on a column of pipe 702 (consisting of a drill pipe), in Figures 9 and 10. The column of pipe 702 has an internal passage 703 that communicates with the debris collection set. The debris collection set 700 includes: powerhead set 704, drill pipe screen 706, upper handling section 708, screen assembly 800, lower handling section 712, and extraction set 900. Nozzles 710, 714 and 722 are included to fit threads and close the bottom of the assemblies. While in the illustrated configuration, the assembly 700 includes, for example, only one of each component. It is envisaged that more than one extraction screen can be mounted in series, if necessary. It should be noted that the handling sections are of the same configuration (size and shape) as the drill pipe, allowing the handling sections of the set 700 to be grasped and manipulated by the same clamps and / or tools on the drill rig or drill rig. service as used on the drill pipe. The handling sections have a length that, when mounted with one of the filter or extraction assemblies, can be handled as a drill pipe section. For example, the combined length of the handling section 712 is selected in such a way that, when connected to the extraction set 900 and the nozzle 722, the resulting set is about 30 feet long, allowing it to be made on top of the construction site of pipes or recovered from the well, placed in the pipe yard and disassembled and emptied without using rig equipment. Likewise, the combined length of the handling sub or section 708 is selected in such a way that, when connected to the filter screen assembly 724 and nozzle 712, the resulting assembly is about 30 feet long and can be handled as a single length of tube. The same is true for the length of the mounted powerhead tool 704 and drill pipe screen 706. The debris collection set 700 can be 90 feet long, allowing the set to be handled as three sections of drill pipe .

[0054] The power head 704 can have any of the configurations described here. The head 704 is connected to a section of drill pipe 702 and its passage 703. Discharge openings 716 are opened by the flow of an actuation ball 718 into a seat in the head 704. Ball 718 also deflects the drill pipe 702 flow through the eductors 720 and out of the openings 716 to the annular formed between the debris collection set 700 and the well wall. The 720 eductors create a low pressure area which, in turn, causes fluids to flow to the bottom of the pipe column 702 and through the passage 703 through the extraction assembly 900 and the screen assembly 800. Debris is removed from the well in extraction 900 and screen sets 800.

[0055] Details of the screen assembly 800 are illustrated in Figures 11 and 13. The screen assembly 800 comprises a cylindrical housing 810 that is threaded externally on its lower end 812 to connect with the lower handling section 712 and internally threaded on its upper end 814 to connect with upper handling section 708. In this embodiment, the nozzle 714, shown in Figure 10, is eliminated. A base 840 is mounted on the lower end of the screen assembly 800 and is held in place between the opposite annular shoulders 816 and 818. The base 840 is in the form of a flat washer, with a central flow passage 842 extending through it . An inner speed tube 820 is mounted on and extends axially from the base 840. Inner speed tube 820 has a cylindrical shape and is a size to fit around the perimeter of the central flow passage 842. The upper end 822 of the speed tube 820 is opened.

[0056] A cylindrical screen 830 extends from the base 840 and forms an annular 832 around the inner speed tube 820. In the present embodiment, the screen 830 is illustrated as a coiled wire screen, but it is anticipated that others types of debris screens could be used. A second ring 834 is formed between the housing 810 and the screen 830. A cover 860 closes the upper end of the cylindrical screen 830. A plurality of spacers that extend axially 850 are attached to the outside of the screen 830 to provide support. [0057] A relief valve 870 is mounted on cover 860. Details of relief valve 870 are illustrated in Figure 13. The relief valve 870 comprises a valve element 872, a valve stem 874, a compression spring 876 and a valve cage 878. As shown, spring 876 urges valve element 872 against cover 860 to close the top of filter 830. When filter 830 becomes charged with debris, the pressure of the fluid inside the filter 830 will overcome spring 876 and lift valve element 872 away from cover 860, allowing the fluid to bypass filter 830. As illustrated, the force exerted by spring 876 and valve element 872 can be adjusted by turning nut 879 on the stem threaded 874.

[0058] In normal operation, well fluids containing debris flow to the screen assembly 800 through tube 820. The inlet flow into annular 832 is filtered by flowing through screen 830 and into annular 834. As the fluids wells are filtered, debris accumulates in the annular 832 and the filter flow leaves the screen assembly 800 through the upper handling section 708. According to a characteristic of the present invention, when the lower handling section 712 (nozzle 714 ) is disconnected from housing 810, the base assembly 840, tube 820 and screen 830 can be axially removed from housing 810 for cleaning or repair.

[0059] Details of the extraction set 900 are illustrated in Figures 12 a and b. The extraction assembly 900 comprises a cylindrical housing 910 which is threaded externally at its lower end 912 and threaded internally at its upper end 914. An internal speed tube 920 extends axially from and is connected to the base 930. The tube 920 creates a debris collection ring 926 with the interior of housing 910. Base 930 is mounted between opposing shoulders in housing 910 and nozzle 722. Stabilizers 922 are mounted on the outside of tube 920 to center it in the housing 910. A porous deflection cone (or “extraction”) 940 is mounted above the opening end 924 of tube 920. Passage 932 communicates with the interior of tube 920. In operation, well fluids enter the extraction assembly 900, or are discharged from speed two 920 towards deflection cone 940, where larger debris is deflected radially to fall back into ring 926. The extra set 900 can be simply removed by unscrewing the nozzle 722.

[0060] According to a particular feature of the present invention, the screen and the extraction sets can be extended in length or multiple sets can be used together with each other, depending on the conditions present in a well location. If additional amounts of debris are anticipated, then the extraction section can be extended in length. As illustrated in Figure 12b, housing 910 uses combination threads 910a to add a second housing section 910b. Speed tube 920d is added to tube 920 using two collars 920a and 920c and a tube grading section 920b. In this way, one or more sections can be added to the extraction set 900 to accommodate larger volumes of debris. Similarly, the screen assembly 800 can be extended as needed.

[0061] In use, the nozzles of the various assemblies can be connected and disconnected away from the well probe, such as in a pipe yard, using portable mechanical tools, such as mechanical chain clamps and pipe wrenches or horizontal clamping unit . For example, the nozzle 722 is placed or removed to assemble or disassemble the extraction tool 900 with hand-held mechanical tools and does not require the use of probe floor equipment. For example, when disassembly of the extraction tool is desired for cleaning, the composition torque for the nozzle may be broken (or compounded) as the tool is removed (or inserted) from the well using mechanical clamps on the probe floor. and the nozzle removed and the extraction tool cleaned in the pipe yard, without occupying the probe. The same is true for the nozzle 714 and the filter screen assembly 800. After placing the different tool sets on a drill string and lowering to a well hole, the tools are used as described here. When tool sets are removed from the well, they are decoupled or disconnected from the pipe column using the probe. As explained above, the assemblies are designed to be removed from the well as a section of pipe. A combined nozzle set 722, extraction set 900 and manipulation sub 712 is removed as a column unit. The entire unit can then be placed away from the equipment, such as in a pipe yard or other location, thus freeing the platform for other uses. The nozzle 722 is then removed using portable mechanical tools instead of the probe equipment. The removable panel, inner tube and stabilizers are then easily cleaned. Likewise, the filter screen assembly and powerhead assemblies can be decoupled from the drill string or pipe, removed to a pipe yard or other area, and then disassembled for cleaning. The terms "nozzle" and "sub bottom" and the like, as used herein, indicate a tubular section having a flow passage through it and removably attachable to one end of a tool housing, such as, for example, nozzles 714 and 722, and lower sub 301.

[0062] Although the specific modalities of the inventions have been shown and described, numerous variations and alternative modalities will occur to those skilled in the art. Therefore, it is intended that the inventions are limited only in terms of the appended claims.

[0063] The inventions can be incorporated in other specific forms without departing from the present invention, since the described examples are only illustrative and not restrictive. The scope of the inventions is therefore indicated by the appended claims and not by the previous description. Any changes to claims that come within the meaning and equivalence range of the claims will be included in your scope. In addition, all published documents, patents and applications mentioned herein are hereby incorporated by reference, as if presented in their entirety.

Claims (23)

1. Well hole tool adapted to be lowered into a well hole in a pipe column, the tool characterized by the fact that it comprises: - an elongated tubular element (25) open at both ends with the upstream end adapted for connection to the pipe column, an internal fluid passage (102) extending from the upstream end of the tubular element to the lower open end of the tubular element, a discharge opening (150) in the wall of the tubular element extending between the passage of internal fluid (102) and the exterior of the tubular element; - a valve body (30) having a valve fluid passage extending through it and an eductor passage (155) extending to the discharge opening (150) only when the valve is in the open position, the valve body (30) mounted on the tubular element to axially move the tubular element between a closed position, blocking flow through the discharge opening (150) but allowing flow through the eductor passage (155) and an open position that allows flow through the passage eductor (155) through the discharge opening (150); and - a valve seat (132) facing upstream in the valve body (30) surrounding the valve fluid passage, the seat being of a size and shape to receive a valve element (120) to block the flow through of the valve fluid passage, but do not block the flow to the eductor passage (155) while the valve body (30) is in the closed position and to move the valve body (30) from the closed position to the open. 2. Tool, according to claim 1, characterized by the fact that the eductor (155) has an inlet (122), suction (124) and outlet; - an inlet fluid passage in the valve body (30) connecting the eductor inlet (155) with the internal fluid passage (102); - a suction passage in the valve body (30) connecting the suction of the eductor (155) with the internal fluid passage (102); and - an outlet passage in the valve body (30) connecting the outlet of the eductor (155) in fluid communication with the discharge opening (150) when the valve body (30) is in the open position. 3. Tool according to claim 1, characterized in that it additionally comprises a shear pin (176) holding the valve body (30) in the open position. 4. Tool, according to claim 1, characterized by the fact that the tubular element is cylindrical and the fluid passage is centrally located. 5. Tool according to claim 1, characterized by the fact that a plurality of eductors (155) are mounted on the body circumferentially spaced around the fluid passage. 6. Tool, according to claim 1, characterized in that the valve seat (132) is semi-spherical. 7. Tool according to claim 1, characterized in that it additionally comprises a valve element (264) engaging the seat and blocking flow through the fluid passage. 8. Tool according to claim 7, characterized in that the valve element (264) is spherical in shape. 9. Tool according to claim 1, characterized in that the inlet passage (122) is in fluid communication with the internal fluid passage (102) at a point upstream of said valve seat (132). 10. Tool according to claim 1, characterized in that the suction port is in fluid communication with the internal fluid port (102) at a point downstream of the valve seat (132). 11. Tool according to claim 1, characterized in that the eductor (155) comprises a nozzle axis parallel to the internal fluid passage (102). 12. Tool according to claim 1, characterized in that the eductor (155) is a jet pump. 13. Tool, according to claim 1, characterized by the fact that it also comprises a debris trap (330, 370) connected to the lower end of the tool. 14. Tool according to claim 13, characterized in that the debris trap (330, 370) comprises: - an elongated tool housing having an internal passage for flow of well fluids through the housing, the housing having a inlet and outlet, the housing adapted for connection to a pipe column (702); - an elongated fabric element (339, 830) positioned in the housing, defining a first ring (834) between the housing and the fabric element; and - an inner tube (820) in fluid communication with the housing inlet, the inner tube (820) positioned inside the screen element (830) and defining a second annular (832) between the inner tube (820) and the element screen, one end of the inner tube in fluid communication with the housing inlet, the inner tube (820) to direct fluid flow from the housing inlet to the first annular (834) to capture debris from the fluid. 15. Tool, according to claim 13, characterized in that the debris catcher (330, 370) comprises: -an elongated housing that defines an internal passage, an extraction element (340, 900) and a removable subset ( 362), - the extraction element (340, 900) positioned near an upper end of the elongated and operable housing to direct debris in the well fluid to annul it between the inner tube (820) and the housing; and - the removable sub-assembly (362) comprising an elongated inner tube (372, 920) positioned inside the housing, thus defining an annular (926) between the inner tube and the housing, a fixed front plate (336, 930), removably, the housing, the front plate (336, 930) for blocking fluid flow from the lower end of the annular between the inner tube and the housing, the front plate (336) having an inlet passage in it to direct flow of fluid into the inner of the inner tube. 16. Tool according to claim 1, characterized in that the valve body (30) comprises: - a central fluid passage that extends through said valve body center (30); - a plurality of eductors (155) located externally to the central fluid passage and extending in parallel fluid relationship through the valve body (30); - a nozzle (122) in the eductor passage (155) of a size and shape to create a low pressure zone when the fluid passes through the eductor passage (155); and - the valve body (30) is mounted on the tubular element for axially displacing the tubular element between a fluid flow blocking position through the discharge opening and a position connecting the tubular element opening to the eductors (155). 17. Tool, according to claim 1, characterized in that it additionally comprises a deviation opening (115) in the wall of the tubular element (25), a second valve body mounted in the tubular element (25) to move axially in the tubular element between the passage position that blocks the flow through the discharge opening and an actuated position that blocks flow through the valve fluid passage and the discharge opening while allowing flow through the bypass opening (115). 18. Method to use a flow tool, to create a flow containing debris from the well hole to a debris trap mounted below the tool in a pipe column (702), the method characterized by the fact that it comprises the steps of: - providing a flow tool that has an open internal passage at both ends of the tool and an eductor passage (155) extending radially from the internal passage; - connect the tool to a pipe column (702) with the internal passage (703) in fluid communication with the pipe column (702); - connect a debris trap (700) to the pipe column (702) below the flow tool; - position the pipe column (702) in the well hole and pump well fluids below the pipe column (702) to flow through the flow tool and in the debris trap (700); - thereafter block fluid communication through the internal passage at a blocking location while allowing fluid communication between the eductor passage (155) and the upstream internal passage from the blocking location and blocking fluid communication from the passage from the eductor (155) to a discharge opening (150) in the tool wall (110, 704); - after that open the fluid communication from the eductor passage (155) to the discharge opening (150) in the tool wall (110, 704) through the axial movement of the eductor passage (155); and - draining the fluids through the eductor passage (155), through the discharge opening (150) into and down the well hole along the flow tool ring and into the debris trap. 19. Method, according to claim 18, characterized in that it additionally comprises the step of axially moving a valve body (30) from among a first position, blocking the flow through an opening in the tool wall and the whole the fluid entering the tool flows through an internal passage in the tool and into the debris trap and a second position, the entire flow being directed through the eductor passage (155) and an opening in the tool wall. 20. Method according to claim 19, characterized in that the step of moving further comprises pumping well fluids through the passage of the eductor (155) and into the well bore while creating flow in the debris trap. 21. Method, according to claim 17, characterized in that the locking step comprises engaging a movable valve element with a valve seat facing upwards surrounding the internal passage to divert flow from the pipe column (702) to the eductor passage (155). 22. Method according to claim 21, characterized in that it additionally comprises draining fluids from the eductor inlet to the eductor outlet to create a low pressure in the suction opening of the eductor to cause the fluids to flow from the internal passage for the eductor pass. 23. Method according to claim 18, characterized in that the step of opening a discharge opening (150) in the tool wall comprises engaging a movable valve element with an upward facing valve seat surrounding the internal passage for blocking the flow to axially move an element of the discharge opening block (150).